thank you both, very much, it is work! all i need to do it is make a duplicate a "ball" layer and turn on shading effect (i understand that "ball" and ball shadow must be in seperate layers, but dont know how), and than add a mask ofcourse!
hellow all! i am new here.
when i need a new key? i click "add keyframe" for each channel.
it is possible click it once for all channel, thanks for your time